Hw-044 Datasheet ((full)) -

Cheap HW-044 modules often use "clone" MAX3232 chips which may struggle with higher baud rates or exhibit instability at exactly 3.0V. If you are planning a build, I can help you with:

It acts as a translator, enabling seamless two-way communication, and is built around the industry-standard integrated circuit (IC). This chip is known for its reliability and ability to operate at low voltages. hw-044 datasheet

| Model | Axes | Switch | Voltage | Output Type | PCB Size (approx) | |-------|------|--------|---------|-------------|------------------| | | 2 | Yes | 3.3-5V | Analog | 40x36 mm | | KY-023 | 2 | Yes | 3.3-5V | Analog | 40x36 mm (nearly identical) | | HW-504 | 2 | No | 3.3-5V | Analog | 32x28 mm (compact) | | PS2 Style (generic) | 2 | Yes | 5V only | Analog | 46x40 mm (with larger cap) | | Thumbstick breakout (STEM) | 2 | Yes | 3.3-5V | Analog + I2C (some) | 37x35 mm | Cheap HW-044 modules often use "clone" MAX3232 chips

Avoid connecting the HW-044 to the default Digital Pins 0 and 1 on the Arduino Uno if you plan to use the hardware serial monitor via USB at the same time, as this will trigger data collisions on the line. | Model | Axes | Switch | Voltage

Features a very low supply current, typically around 300 μA , making it efficient for battery-powered projects.

Connect to Arduino digital pin D6 (or any pin capable of handling interrupts/pulse measurements).

The is a highly efficient, dual-channel serial level shifter board powered by the Texas Instruments or Maxim Integrated MAX3232 IC . It translates high-voltage RS232 signals (up to ±15V) down to safe TTL/CMOS levels (3.3V or 5V) . This makes it a core bridge for linking modern microcontrollers like Arduino, ESP32, and Raspberry Pi with legacy computers, industrial instruments, and specialized serial equipment. 📋 Comprehensive Specifications